openSUSE Releases Kernel Update Addressing CVE-2025-21791 and More
opensuse
October 13, 2025
An update that solves three vulnerabilities can now be installed.
Description
This update for the Linux Kernel 6.4.0-150600_23_42 fixes several issues.
The following security issues were fixed:
* CVE-2025-38477: net/sched: sch_qfq: Fix race condition on qfq_aggregate
(bsc#1247315).
* CVE-2025-21791: vrf: use RCU protection in l3mdev_l3_out() (bsc#1240744).
* CVE-2025-38089: sunrpc: handle SVC_GARBAGE during svc auth processing as
auth error (bsc#1245509).
Patch
## Patch Instructions:
To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
* openSUSE Leap 15.6
zypper in -t patch SUSE-2025-3563=1
* SUSE Linux Enterprise Live Patching 15-SP6
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2025-3563=1
Package List
* openSUSE Leap 15.6 (ppc64le s390x x86_64)
* kernel-livepatch-6_4_0-150600_23_42-default-debuginfo-8-150600.2.1
* kernel-livepatch-SLE15-SP6_Update_9-debugsource-8-150600.2.1
* kernel-livepatch-6_4_0-150600_23_42-default-8-150600.2.1
* SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64)
* kernel-livepatch-6_4_0-150600_23_42-default-debuginfo-8-150600.2.1
* kernel-livepatch-SLE15-SP6_Update_9-debugsource-8-150600.2.1
* kernel-livepatch-6_4_0-150600_23_42-default-8-150600.2.1
References
* bsc#1240744
* bsc#1245509
* bsc#1247315
## References:
* https://www.suse.com/security/cve/CVE-2025-21791.html
* https://www.suse.com/security/cve/CVE-2025-38089.html
* https://www.suse.com/security/cve/CVE-2025-38477.html
* https://bugzilla.suse.com/show_bug.cgi?id=1240744
* https://bugzilla.suse.com/show_bug.cgi?id=1245509
* https://bugzilla.suse.com/show_bug.cgi?id=1247315
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Severity
important
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Critical
Announcement ID: SUSE-SU-2025:03563-1
Release Date: 2025-10-12T04:33:29Z
Affected Products:
* openSUSE Leap 15.6
* SUSE Linux Enterprise Live Patching 15-SP6
* SUSE Linux Enterprise Real Time 15 SP6
* SUSE Linux Enterprise Server 15 SP6
* SUSE Linux Enterprise Server for SAP Applications 15 SP6
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